Aliy Zirkle continued her lead over Martin Buser and Sonny Lindner Saturday night in the 2014 Iditarod. She arrived in Unalakleet first and left first.Buser, Lindner, Jeff King and Aaron Burmeister were still in Unalakleet at 10:00 p.m. Zirkle and Buser were battling for the lead much of Saturday.The race continued to take its toll on mushers and their teams. Nicolas Petit, who was racing near the front, scratched Saturday night just outside of Unalakleet. He told his officials he was concerned for the welfare of his dogs. Earlier in the day, Ramey Smyth scratched in Ruby saying that some of his dogs were sick.Mitch Seavey, the 2013 champion, was on the outskirts of Unalakleet Saturday night about 10:15.Abbie West continued to lead the rookie field. She was out of Kaltag Saturday night.